How to combine strings inside foreach into single string PHP

Question

I have code like this

$word = \'foo\';
$char_buff = str_split($word);

foreach ($char_buff as $chars){
    echo var_dump($chars);
}

The out

Answer 1

So, why do you split it just to make it a string again?

$word='foo'
$char_buff = str_split($word);

$final = array();
foreach ($char_buff as $chars){
    $final[] = $chars;
}

var_dump( implode('', $final) );